What are the welding precautions for SPA-H rusty steel

Our company is a large SPA-H rusty steel steel enterprise integrating steel plate production, sales and processing. It is a first-class agent of Shanxi Taigang, Shanghai Baosteel, Jiugang, Xi'an Huaxin, Taishan steel, Dongfang special SPA-H rusty steel steel and southwest special steel. It is a special dealer of famous steel plants in China, such as Columbus, NAS, acerinox, Outokumpu, Arcelor, nipponmetalindustry, nipponyakinkogyo, NSC, etc.

Whose hardness is higher between No.20 steel and No.45 steel, SPA-H rusty steel? Both No.20 steel and No.45 steel belong to high-quality carbon structural steel. According to the characteristics of high-quality carbon structural steel, its carbon content determines the performance of the steel. The higher the carbon content, the higher the hardness and strength of the steel, the lower the plasticity and toughness. The carbon content of No.20 steel and No.45 steel are 0.20% and 0.45% respectively, which shows that the hardness of No.45 steel is higher under the same process.

SPA-H rusty steel, Chinese grade 45 steel belongs to high quality carbon structural steel. The application of SPA-H rusty steel, Chinese grade 45 steel depends on its various properties. SPA-H rusty steel, Chinese grade 45 steel has certain toughness and plasticity, high strength and good machinability. Good comprehensive mechanical properties of Chinese grade 45 steel can be obtained by quenching and tempering treatment. Chinese grade 45 steel is suitable for manufacturing high strength moving parts, such as air compressor, piston of pump, impeller of steam turbine, rolling shaft, connecting rod, worm, rack, gear and pin in heavy and general machinery.

30CrMnSiA steel delivery status: SPA-H rusty steel, 30CrMnSiA steel shall be delivered in the state of heat treatment (normalizing, annealing or high temperature tempering) or without heat treatment, and the delivery status shall be indicated in the contract. 30CrMnSiA steel has high strength, but it belongs to medium carbon quenched and tempered steel, with large hardenability, so its weldability is very poor. After quenching and tempering, 30CrMnSiA steel has high strength, enough toughness and good hardenability. And can be used as grinding wheel shaft, gear and sprocket.

High quality mild steel sheet and plate product SPA-H rusty steel supply 10.5*1970*7950, 13*1300*4350, 11*1900*12500, 12.5*2870*7100, 11*1870*12500, 10.5*1970*8000, 13*1520*7950, 11*1910*9000, 12.5*2900*8250, 11*1870*13500, 10.5*2350*6200, 14*1440*6100, 11*3100*10000, 13*1510*4850, 11*1870*9300, 11*1570*12000, 14*1800*9750, 11.5*2640*7600, 13*2380*6000, 11*2400*10000.

Hot rolled plates are known for their superior mechanical properties over commodity grades of merchant bar. The hot rolled SPA-H rusty steel plates products are made to specific chemistry and mechanical properties ranges, allowing them to be used in engineered applications. Resulting shafts, axles, and gears can be used in the automotive SPA-H rusty steel industry and agriculture equipment. A36 mild steel has good strength, formability, and excellent welding properties. We also can supply welding, fabricating, and bending service.

The after-sales service personnel understand the user's ideas and needs in detail, and stand on the other side's position and interests. Actively communicate with users and help them solve practical problems. This not only solves the service problem, but also improves the customer's trust in the company.